Preheat oven to 375F. Line baking dish with aluminum foil that is larger than the pan so it can be folded over chicken. Rinse chicken breast. Cut a thin slit
across the top of each breast. Mix water and lemon juice together and pour over chicken in baking dish. Sprinkle with Mrs Dash Italian Medley Seasoning. Sprinkle chopped onion around chicken. Divide butter into 4 parts and add to water/onion (do not place on top of the chicken).
Cook rice in boiling water for 20 minutes. Rinse.
Bake 30 minutes or until chicken is cooked through. Place chicken over rice and if desired, top with dropping juice.